Explanation

• Navigation satellites are used to identify the location of objects on Earth.
• They provide position, navigation, and timing (PNT) services.
• These satellites help determine the exact location of people, vehicles, ships, and aircraft.
• They are widely used for navigation, mapping, and tracking.
• The most well-known navigation satellite system is GPS (Global Positioning System).

Last verified on 10-07-2026

Explanation

• The collective term for all the petals of a flower is called the Corolla.
• The corolla is usually brightly colored to attract pollinators such as insects and birds.
• It is the second whorl of a flower, located inside the calyx.
• Petals help in the process of pollination.

Additional information:

• Calyx → Collective term for sepals
• Androecium → Male reproductive part (Stamens)
• Gynoecium (Pistil) → Female reproductive part (Carpels)

Last verified on 10-07-2026

Explanation

• In forging, a slow squeezing process is called Press forging.
• Press forging shapes the metal by applying slow and continuous pressure.
• It produces more accurate shapes and a better surface finish than hammer forging.
• It is commonly used for manufacturing large and strong metal components.
• The process improves the strength and grain structure of the metal.

Last verified on 09-07-2026

Explanation

The additive inverse of a number is the value that, when added to the original number, results in zero.

For 1/7, the additive inverse is:

-1/7

Since:

1/7 + (-1/7) = 0

Last verified on 09-07-2026

Explanation

• Poisson’s Ratio (μ or ν) is the ratio of lateral strain to longitudinal strain.
• Formula: ν = Lateral Strain / Longitudinal Strain
• Longitudinal strain occurs in the direction of the applied load.
• Lateral strain occurs perpendicular to the applied load.
• It is a dimensionless quantity.
• It is represented by the Greek letter ν (nu).

Explanation

• According to Fleming's Right-Hand Rule, the forefinger points in the direction of the magnetic field (lines of force).
• The thumb shows the motion of the conductor.
• The forefinger shows the magnetic field (N → S).
• The middle finger shows the induced current (or induced e.m.f.).
• This rule is used for electric generators.

Last verified on 10-07-2026

Explanation

A subset must have all its elements in set A.

B = {4, 5} contains 5, which is not in A.

Therefore, B is not a subset of A.

Last verified on 10-07-2026

Explanation

• A′ (A complement) contains all elements not in A.
• No element can be both in A and not in A at the same time.
• Therefore, A ∩ A′ = ∅ (Empty Set).

Last verified on 10-07-2026

Explanation

Any non-zero number raised to the power 0 is always 1.

So, (1/2)° = 1

Last verified on 10-07-2026

Explanation

(5a + 6b - 2c) - (4a + 3b - c)  

Remove brackets. Remember to change signs:  

= 5a + 6b - 2c - 4a - 3b + c  

Combine like terms:  

= (5a - 4a) + (6b - 3b) + (-2c + c)  

= a + 3b - c

Last verified on 10-07-2026